[ovirt-users] Ovirt snapshot failing on one VM

Tue Apr 22 14:57:12 UTC 2014

This is the actual problem:

bf025a73-eeeb-4ac5-b8a9-32afa4ae482e::DEBUG::2014-04-22 
10:21:49,374::volume::1058::Storage.Misc.excCmd::(createVolume) FAILED: 
<err> = 
'/rhev/data-center/9497ef2c-8368-4c92-8d61-7f318a90748f/95b9d922-4df7-4d3b-9bca-467e2fd9d573/images/4
66d9ae9-e46a-46f8-9f4b-964d8af0675b/87efa937-b31f-4bb1-aee1-0ee14a0dc6fb: error 
while creating qcow2: No such file or directory\n'; <rc> = 1

from that you see the actual failure:

bf025a73-eeeb-4ac5-b8a9-32afa4ae482e::ERROR::2014-04-22 
10:21:49,392::volume::286::Storage.Volume::(clone) Volume.clone: can't 
clone: 
/rhev/data-center/9497ef2c-8368-4c92-8d61-7f318a90748f/95b9d922-4df7-4d3b-9bca-467e2fd9d573/images/466d
9ae9-e46a-46f8-9f4b-964d8af0675b/1a67de4b-aa1c-4436-baca-ca55726d54d7 to 
/rhev/data-center/9497ef2c-8368-4c92-8d61-7f318a90748f/95b9d922-4df7-4d3b-9bca-467e2fd9d573/images/466d9ae9-e46a-46f8-9f4b-964d8af0675b/87efa937-b31f-4bb1-aee1-0ee1
4a0dc6fb
bf025a73-eeeb-4ac5-b8a9-32afa4ae482e::ERROR::2014-04-22 
10:21:49,392::volume::508::Storage.Volume::(create) Unexpected error
Traceback (most recent call last):
   File "/usr/share/vdsm/storage/volume.py", line 466, in create
     srcVolUUID, imgPath, volPath)
   File "/usr/share/vdsm/storage/fileVolume.py", line 160, in _create
     volParent.clone(imgPath, volUUID, volFormat, preallocate)
   File "/usr/share/vdsm/storage/volume.py", line 287, in clone
     raise se.CannotCloneVolume(self.volumePath, dst_path, str(e))
CannotCloneVolume: Cannot clone volume: 
'src=/rhev/data-center/9497ef2c-8368-4c92-8d61-7f318a90748f/95b9d922-4df7-4d3b-9bca-467e2fd9d573/images/466d9ae9-e46a-46f8-9f4b-964d8af0675b/1a67de4b-aa1c-4436-baca-ca55726d54d7, 
dst=/rhev/data-cen
ter/9497ef2c-8368-4c92-8d61-7f318a90748f/95b9d922-4df7-4d3b-9bca-467e2fd9d573/images/466d9ae9-e46a-46f8-9f4b-964d8af0675b/87efa937-b31f-4bb1-aee1-0ee14a0dc6fb: 
Error creating a new volume: (["Formatting 
\'/rhev/data-center/9497ef2c-8368-
4c92-8d61-7f318a90748f/95b9d922-4df7-4d3b-9bca-467e2fd9d573/images/466d9ae9-e46a-46f8-9f4b-964d8af0675b/87efa937-b31f-4bb1-aee1-0ee14a0dc6fb\', 
fmt=qcow2 size=21474836480 
backing_file=\'../466d9ae9-e46a-46f8-9f4b-964d8af0675b/1a67de4b-aa
1c-4436-baca-ca55726d54d7\' backing_fmt=\'qcow2\' encryption=off 
cluster_size=65536 "],)'

do you have any alert in the webadmin to restart the vm?

Dafna

On 04/22/2014 03:31 PM, Steve Dainard wrote:
> Sorry for the confusion.
>
> I attempted to take a live snapshot of a running VM. After that 
> failed, I migrated the VM to another host, and attempted the live 
> snapshot again without success, eliminating a single host as the cause 
> of failure.
>
> Ovirt is 3.3.4, storage domain is gluster 3.4.2.1, OS is CentOS 6.5.
>
> Package versions:
> libvirt-0.10.2-29.el6_5.5.x86_64
> libvirt-lock-sanlock-0.10.2-29.el6_5.5.x86_64
> qemu-img-rhev-0.12.1.2-2.415.el6.nux.3.x86_64
> qemu-kvm-rhev-0.12.1.2-2.415.el6.nux.3.x86_64
> qemu-kvm-rhev-tools-0.12.1.2-2.415.el6.nux.3.x86_64
> vdsm-4.13.3-4.el6.x86_64
> vdsm-gluster-4.13.3-4.el6.noarch
>
>
> I made another live snapshot attempt at 10:21 EST today, full vdsm.log 
> attached, and a truncated engine.log.
>
> Thanks,
>
> *Steve
> *
>
>
> On Tue, Apr 22, 2014 at 9:48 AM, Dafna Ron <dron at redhat.com 
> <mailto:dron at redhat.com>> wrote:
>
>     please explain the flow of what you are trying to do, are you
>     trying to live migrate the disk (from one storage to another), are
>     you trying to migrate the vm and after vm migration is finished
>     you try to take a live snapshot of the vm? or are you trying to
>     take a live snapshot of the vm during a vm migration from host1 to
>     host2?
>
>     Please attach full vdsm logs from any host you are using (if you
>     are trying to migrate the vm from host1 to host2) + please attach
>     engine log.
>
>     Also, what is the vdsm, libvirt and qemu versions, what ovirt
>     version are you using and what is the storage you are using?
>
>     Thanks,
>
>     Dafna
>
>
>
>
>     On 04/22/2014 02:12 PM, Steve Dainard wrote:
>
>         I've attempted migrating the vm to another host and taking a
>         snapshot, but I get this error:
>
>         6efd33f4-984c-4513-b5e6-fffdca2e983b::ERROR::2014-04-22
>         01:09:37,296::volume::286::Storage.Volume::(clone)
>         Volume.clone: can't clone:
>         /rhev/data-center/9497ef2c-8368-4c92-8d61-7f318a90748f/95b9d922-4df7-4d3b-9bca-467e2fd9d573/images/466d9ae9-e46a-46f8-9f4b-964d8af0675b/1a67de4b-aa1c-4436-baca-ca55726d54d7
>         to
>         /rhev/data-center/9497ef2c-8368-4c92-8d61-7f318a90748f/95b9d922-4df7-4d3b-9bca-467e2fd9d573/images/466d9ae9-e46a-46f8-9f4b-964d8af0675b/b230596f-97bc-4532-ba57-5654fa9c6c51
>
>         A bit more of the vdsm log is attached.
>
>         Other vm's are snapshotting without issue.
>
>
>
>         Any help appreciated,
>
>         *Steve
>         *
>
>
>         _______________________________________________
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>         Users at ovirt.org <mailto:Users at ovirt.org>
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>
>
>
>     -- 
>     Dafna Ron
>
>

-- 
Dafna Ron